Panasonic LSEP1287 4 blinks

[tw2005]

Re: Panasonic LSEP1287 4 blinks

parts of interest although I've highlighted parts also that may fail as well

[Russ300]

Re: Panasonic LSEP1287 4 blinks

Ahh right, thanks tw2005, I just set email notifications of when someone replies to a thread i have started.

Anyway, two panasonics have come up on ebay from the same seller with broken screens

TX-P50X20B and TX-P42G15B, would these have the same or compatible boards in i require ?

[tw2005]

Re: Panasonic LSEP1287 4 blinks

Ahh right, thanks tw2005, I just set email notifications of when someone replies to a thread i have started.

Anyway, two panasonics have come up on ebay from the same seller with broken screens

TX-P50X20B and TX-P42G15B, would these have the same or compatible boards in i require ?

no, the x20 may have components the same but uses sc/sd/su boards. yours is all in one SN. Just because the screen is cracked, does not mean those SC boards are good and I find often the buffer boards (SD) are blown from TVs with cracked screens that have been powered on.

Done any deeper fault finding on the board?

[Russ300]

Re: Panasonic LSEP1287 4 blinks

quick testing with components still soldered to board:-
D451 - shorted both directions - diode test function on multimeter
D441 - OK
IC771 - appears ok
D503 - shorted
D536 - OK
D522 ok
D534 ok
Q701 ok
D701 shorted

Plus the three pther FETS shorted.

I think this is uneconomical to repair

[tw2005]

Re: Panasonic LSEP1287 4 blinks

quick testing with components still soldered to board:-
D451 - shorted both directions - diode test function on multimeter
D441 - OK
IC771 - appears ok
D503 - shorted
D536 - OK
D522 ok
D534 ok
Q701 ok
D701 shorted

Plus the three pther FETS shorted.

I think this is uneconomical to repair

well the parts are cheap to get but it could be a mine field. D701 shorted most likely will be Q702 shorted and that puts ic773 most likely short between vcc-gnd and if you look at the cct these drive q661.

[flocko]

Re: Panasonic LSEP1287 4 blinks

Hi been were you are with one of these. the parts are not expensive less than £15.00 most you can get over here in uk (eBay all SMD parts on here ) the bigger parts if you can wait I buy from China (www.utsource.net) if you order on line they will be with you in about 10-12 days. I buy in bulk just had some parts today ordered on the 8/1/15. There are some posts that are tagged to a TW thread that will be of help to you, showing the parts that I replaced to fix my TNPA 5066 board, It was not all plain sailing as you will read but could be of help. Flocko